Study	Reason for exclusion
Chapman 1997	A trial of 325 people (with 374 acute fractures) who were randomised to either a collagen‐calcium phosphate graft material or autogenous bone graft. Our attempts to obtain further information on this trial, including separate data for patients with distal radial fractures, were unsuccessful. The contact author indicated that the raw data were with Zimmer.
Dickson 2002	A trial involving 38 people with various fractures, 6 of which were radial fractures, who were randomised to BoneSource hydroxyapatite cement versus autologous cancellous bone. Only 28 were followed up. Separate data were not presented for patients with distal radial fractures.
McQueen 2001	Contact trialist indicated that this study, listed in the National Research Register, was not started as the company withdrew the bone substitute.
Schmalholz 1988	Randomised trial comparing bone cement versus external fixation in 20 people with redisplaced Colles' fractures. Excluded as it reported surrogate outcomes only ‐ no clinically relevant outcomes.
Wyrick 1999	We have been unable to obtain further information or any report of this trial, at one time commented on a website, that compared corraline hydroxyapite versus autogenous bone graft in the treatment of distal radius fractures.
Zimmermann 2003	Trial compared open reduction pin and screw fixation and filling the bone defect with calcium phosphate bone cement Norian SRS versus closed reduction and percutaneous pinning. This trial is excluded because this comparison is not covered in this review.